Slanting horn shuttle



Sept. 1, 1931. l. SNOW 1,821,729

SLANTING HORN SHUTTLE Filed Jan. 10. 1930 rectly back and which directs the yarn 5 v 'groove and is broken.

Patentedv Sept. 1, 1931 PATENT OFFICE ISAAC SNOW, OF LAWRENCE, MASSACHUSETTS SLANTING- HORN SHUTTLE This invention relates to shuttles, particularly of the self-threading type used in automatic looms where the threading de- M vices are formed in what is generally known 5; as a shuttle block positioned in the wood of the shuttle. The threading devices continue the threading chamber in the wood from the end of the bobbin recess and are so formed as to direct the thread out through ll? the shuttle eye.

Generally in self-threading shuttles, there is at the forward end of the, shuttle block, a horn which slopes from near the front nose or point of the shuttle block downand didownward intothe shuttle eye and on to a substantially vertical thread pin around which the thread makes a ninety degreeturn i to pass out of the shuttle eye.

In threading, when anew bobbin replaces the old, the trailing end has been fastened to a part of the frame and after the bobbin has been forced into place in. a shuttle, at

the first pick, the thread must unwind from the bobbin in the opposite direction-to that in which it was wound, thus forming a sort of cone with the apex at the fastened point.

The unwinding of the thread and its po sition as the shuttle moves is utilized in It is desirable that the thread should be so caught by devices on the first pickJthat when the shuttle is returned, and there is a w certain amount of slack thread before the pull of the thread which is now caught in the selvage of the cloth begins to unwind it further and pull it back over the horn onto the pin, the thread will not spring out and fail to go around the pin and through the A pointed nose or finger or beak at the front of a shuttle block makes it easier to thread, but ,it is objectionable because of shuttle eye.

the tendency of the thread, in rapidly unwinding from the bobbin, to balloon or loop in such a way that the loop shoots forward and around the nose where it remains. When this happens, if the thread continues to run around the nose, it gradually cuts a Application filed January 10, 1930. Serial No. 419,894."

. The particular purpose of this invention is to provide a shuttlewhich can readily be threaded on the second pick and which has a shuttle block with a pointed nose but which block is of such character that if the thread looning or unthreading.

In the drawings, Fig. 1 1s a plan view of a shuttle with my device in place showinghow a loopmay get caught around the nose.

Fig. 2 is anenlarged front elevation of the shuttle block removed from the shuttle;

Fig. 3 is an elevation, from the side opposite the shuttle eye, of the shuttleblock remolved from the shuttle, also on an enlarged sca e.

Fig. 4 is an enlarged elevation from the back of a. shuttle block removed from a shuttle.

Fig. 5 is an enlarged back elevation, of a modified type of shuttle block.

Fig. 6' is an enlarged side elevation from the side away from theshuttle eye of'another modification of my shuttle block removed from the shuttle. I Fig. 7 is a plan view of another modification of the shuttle block. 7

Fig. 8 is an elevation from the front end of the shuttle block shown in Fig. 7, and Fig. 9 is an elevation from the right of Fig. 8.

Fig. 10 is a back elevation of another modification. of my shuttle block. Y

Figs. 1, 2, 3 and 6 show the thread looped over the nose instead of running longitudinally back from the guide pin behind the tip of the horn to the bobbin.

In the drawings,v A. represents a shuttle, the body of which is made of wood havingthe usual bobbin chamber 10 for a bobbin Bfroin which the yarn C is unwound. r

11 is a threading chambercut in the wood in extension of bobbin recess 10, and 12 is a shuttle block chamber cut out of the wood and forming a part of threading chamber 11.

A shuttle eye in the wood is represented by 13 and this connects through an eye slot 14 with the forward part of threading chamber 11.

S represents the usual attaching screw or bolt which passes through a hole 19 in the low,- er part of the shuttle block D which is preferably made of metal and positioned in the recess It has a longitudinal block threading chamber 1 in extension of the bobbin chamber and its top is formed as a thread directing guide plate 3.

The front end of block D ends in a pointed nose 2 which points slightly downward and the front edge 9 of block D extends diagonally back forming one edge of eye slot 14.

The horn E instead of extending directl forward and back, starts from a point over towards the shuttle eye 13 from the nose 2 and then slopes down, over laterally, and back to a point preferably below and at the other side of nose 2. The lower end of horn E is formed as a guard finger at the upper end of which at the back terminates in a web 7 which merges with the bottom of a socket (21 having the usual guide pin K.

Preferably I drive a pin 5 through the wall of block D which is on the side of the shuttle eye diagonally down and forward so that it projects into the block threading chamber 1, as shown in Fig. 3 and preferably on the other wall slightly above the point of this pin 5, form a horizontal thread stopping ridge 8.

6 is a metal shield which preferably overhangs nose 2.

By this combination, while the thread C can readily pass down pastpin 5 and ridge 8 thence over around horn E and linger it cannot readily get out or ballon. Pin 5 serves as a hook.

If, however, as shown in Figs. 1, 2, and 3,

thread C does balloon and get over onto the edge 9 of nose 2, the shape and especially the lateral slant of horn E and the positionof Web 7 are such that the pull of the thread running out through the shuttle eye 13 will pull it forward and around nose 2 allowing it to slip back into its correct position. (See Figs. 2 and 3.)

Instead of pin 5, I may use a flat metal-hook 135 such asshown in Fig. 5 the tip end of which extends above a ridge 138 instead of below such a ridge and curves forward.

InFig. 6, I show another modification of the shuttle block which is represented by F. It has a longitudinal block threading chamber 31 and its top is formed as a thread directing guide plate whiclrnear the back 4-0 goes over and then sharply downward at wing 48 preferably being formed at its front with a hook or projection 42 from the base of which the front edge 41 extends up and forward where it merges into a thread catching recess 66 having a forward wall 34 which continues as one edge 35 of plate 30 to the nose 32 which is substantially the same as 2 shown in Fig. 3.

The horn I-I extends from a. position on that side of the nose which is nearest the shuttle. eye down, back and over torthe other side until it terminates in the finger 52 in a manner similar to the horn E.

57 is a web which extends back from the top of finger 52 and merges with the bottom edge of a pin socket up into which the vertical thread directing guide pin K is driven.

With this construction M is a friction pin positioned back of pin K and which extends across chan'iber 31 serving to keep the thread up from the bottom of that chamber and at the same time with pin K to exert a certain amount of friction on the thread.

Back from book 4-2, the lower edge 43 of the guide plate slopes gently back and over toward the shuttle eye side and at 44. merges with the back end of the shuttleblock.

The shuttle eye 13, as shown in Fig. 1, is what is known as a left eye, and thread is shown as wound on the bobbin B in the usual way. The result of this combination is that it unwinds, the thread C runs from the top over and away from the eye, thence down and under so that on the first pick, it naturally IHHS down and over the guide plate and up under a hook such as 5, 135, or 42 and down under the sharp nose such as 2, or 32. ()n the next pick, it slips down over the horn and the finger and in front of the guide pin, and thence runs out through the shuttle eye in theusual manner.

If asshown in Figs. 1, 2, and 3, the thread balloons from the bobbin and isthrown forward and around the nose, on account of the fact that the horn slopes down, back and away from the shi'ittle eye side sufficiently, the pull of the thread from down behind the finger 4 and, if one used, the web such as 7 or 57 in ccn'ibination with the throw of the thread. unwindiin from the bobbin B, carries the loopdown and forward over and off the downwardly extending point of the nose of the shuttle block thus freeing it and preventing the thread from breaking.

The hooks 5 or 135 or teeth such as 25 sh m in Fig. 10 tend to hold down the thread at the back and thus assist in pulling the loop of thread over the nose.

The principal feature of this device is the pointed nose together with the horn which extends down, back and laterally over towards the side away from the shuttle eye an: the web which extends b; ck from the lower part of the horn.

As shown in '2', 8 and 9, there are various modifications which I can use. The guideplate 150 can be made without any hook, IIIQIGb 'SQIVlIIQ to direct the thread C down and over into position along wing 152.

' Its back edge'154 is relatively straight and merges into the side oftthe wood of the bobbin recess, and wing front edge 151 extends up and forward, and thence straight to the back, on the side of the eye, a number of 7 downwardly raking teeth, 25, 25.

Such teeth 25, 25 or a flat metal hook such as 135 can either be cast with the block, or cast integral with the block as see the dotted no in Fig. 5 and then bent to the desired shape.

With my horn sloping down and away from the shuttle eye, when'the yarn unwinds in the'usual direction from bobbin B indi- "std by the arrow in Figs. 2 and 4, it gets under the finger at the lower end of the horn andunder the web, so that i is very certain that it will not fail to thread on the second pick.

I claim:

1. T he combination in a shuttle having a bobbin recess, a threading chamber in ex tension thereof, a shuttle block recess forming part of said threading chamber, a shuttle in one side and a slot connecting said eye with the forward part of the threading chamber; of a shuttle block positioned in the shuttle block recess and formed with a longitudinal block threading chamber in ex 'ion of the shuttle threading chamber, said shuttle block having a thread directing top guide plate which at the front extends forward from the side eye and whose front edge forms one side of the shuttle eye slot, d which has another edge extending from a front, downwardly slanting sharp pointed nose back and towards the shuttle eye, there being medially thread stopping ridge on the side of the threading chamber opposite he shuttle eye, a forwardly and downwardly extending hook positioned in the threading chamber, so as to extend from the wall nearest the eye over beyond said ridge; a horn which extends from behind and under said nose from the side of the shuttle eye down, back and over in the opposite direction beyond the nose, said horn terminating at the bottom in a downwardly projecting guard finger; together with web which extends back from the top of said finger and merges in a pin socket; and a vertical thread directing guide pin which extends upinto said socket.

2. The combination in a shuttle having a bobbin recess, a threading chamber in extension thereof, a shuttle block recess forming shuttle block having a thread direct n partof said threading chamber, a shuttle eye in one'side and a slot connecting said eye" with the forward part of the threading chamber; of a shuttle block posltioned, in the shuttl block recess and formed with a longitudinal block threading chamber in extension of the shuttle threading chamber, said shuttle block having a thread directingtop guide plate which at the front extends forward from the side eye and whose front edge forms one side of the shuttle eye slot, and which has another edge extending from a front, downwardly slanting sharp pointed nose back and towards, the shuttle eye, there being a guide hook which extends downward and forward in the threading chamber, the bottom edge of the hook extending up and back to the side of and in line with the edge of the bobbin recess; a horn which extends o from behind and under said nose from'the side'of the shuttle eye down, back and over in the opposite directionbeyond the nose, said hornterminating at the bottom in a downwardly projecting guard linger; together witlra web which extends back from the top of id finger and merges in a pin socket; and

a vertical thread directing guide pin which extends up into said socket.

The combnation in a shuttle having a bobbin recess, threading chamber in extension thereof, a. shuttleblock recessiforming part of said threading chamber, a shuttleeye in oneside and a slot connecting said eye with the forward part of the threading chamber; of a shuttle block positioned in the shuttle block recess and formed with a longitudinal block threading chamber in extension of the shuttie threading chamber, said shuttle block iaving a. thread directing top guideplate which at the front exterids'forward'from the side eye and whose front edges form a downwardly slanting sharp pointed nose; a horn which extends from behind and undersaid nose from the side of the shuttle eye down, back and over'in the opposite direction beyond the nose, said horn terminating at the bottom in a downwardly projecting guard linger; togetherwith a web which exin one side and a slot connecting said eye;

with the'forward part of thethreading chamber; of a shuttle block positioned, in the shuttle block recess and formed with a lonniitudinal block threading chamber in extension of-the shuttle threading chamber, said M top guide plate which at the front extends forward from the side eye and whose front edges form a downwardly slanting sharp pointed nose; a horn which extends from behind and under said nose from the side of the shuttle eye down, back and over in the opposite direction beyond the nose, said horn terminat ing at the bottom in a downwardly projecting guard finger; and a vertical thread dirooting guide pin in position back of said guide finger.

5. The combination in a shuttle having a bobbin recess, a threading chamber in extension thereof,a shuttle block recess forming part of said threading chamber, a shuttle eye in one side and a slot connecting said eye with the forward part of the threading chamber; of a shuttle block positioned in the shuttle block recess and formed with a longitudinal block threading chamber in extension of the shuttle threading chamber, said shuttle block having a thread directing top guide plate which at the front extends forward from the side eye and whose front edges form a slanting sharp pointed nose, there being near the back on the eye side, a downwardly raking member; a horn which extends from behind and under said nose from the side of the shuttle eye down, back and over in the opposite direction beyond the nose, said horn terminating at the bottom in a downwardly projecting guard finger; and a vertical thread directing guide pin in position back of said guard finger.

6. The combination in a shuttle having a bobbin recess, a threading chamber in extension thereof, a shuttle block recess forming part of said threading chamber, a shuttle eye in one side and a slot connecting said eye with the forward part of the threading chamber; of a shuttle block positioned in the shuttie block recess and formed with a longitudinal block threading chamber in extension of the shuttle threading chamber, said shuttle block having a thread directing top guide plate which at the front extends forward tram the side eye and whose front edges form a slanting sharp pointed nose, there being near the back on the eye side, a downwardly raking member; a horn which extends from behind and under said nose from the side of the shuttle eye down, back and over in'the opposite direction, said horn terminating at the bottom in a downwardly projecting guard finger; and a vertical thread directing guide pin in position back of said guard finger.

7. The combination in a shuttle having a bobbin recess, a threading chamber in extension thereof, a shuttle block recess forming part of said threading chamber,

a shuttle eye in one side and a slot connecting said eye with the forward part of the threading chamber; of a shuttle block positioned in the shuttle block recess and formed with a longitudinal block threading chamber in extension of the shuttle thread- 5 ing chamber, said shuttle block having :1.

thread directing top guide plate which at the front extends forward from the side eye and whose front edges form a slanting sharp pointed nose; a horn which extends from behind and under said nose from the side of ISAAC SNOW.

the 

